In the Atomic Vapor Laser Isotope Separation process with large volume of photon-atom interaction, multi-color laser beam travels through the atomic vapor as long as several hundreds of meters.

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Springer series in optical sciences/SPringer series in optical sciences

Long Range Interaction between CW Laser Beams in an Atomic Vapor

W. Happer, A. C. Tam

Published Jan 1, 1977• 2 citations

Publisher

DOI: 10.1007/978-3-540-35968-5_37

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We have observed that circularly polarized laser beams of opposite (equal) polarizations in an alkali vapor repel (attract) each other for laser frequencies on the high-frequency wing of the

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line. Our experiments indicate that these long-range noncontact interactions are mediated by the exchange of polarized atoms between the beams. The repulsion between ${\ensuremath{\sigma}}_{+}$ and ${\ensuremath{\sigma}}_{\ensuremath{-}}$ beams leads to the breakup of a linearly polarized laser beam into two coherent beams of opposite circular polarization.